From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph showing the test results for Myth rear springs made by Toledo Woodhead.
| Identifier | ExFiles\Box 110\3\ scan0072 | |
| Date | 27th April 1941 | |
| TEST OF MYTH REAR SPRINGS, (MADE TOLEDO WOODHEAD) SPRING No 3 MEASURED RATE 157 LB/INCH " FRICTION 40 LB MEASURED RATE 150 LB/INCH " FRICTION 36 LB/INCH LOAD LB RIDE POSITION TESTS BY R.W./G.B. R.W./G.B. 27/4/41 | ||